71449500 has 192 divisors, whose sum is σ = 230630400. Its totient is φ = 17107200.

The previous prime is 71449463. The next prime is 71449507. The reversal of 71449500 is 594417.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71449507) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 655446 + ... + 655554.

It is an arithmetic number, because the mean of its divisors is an integer number (1201200).

Almost surely, 2^71449500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71449500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115315200).

71449500 is an abundant number, since it is smaller than the sum of its proper divisors (159180900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71449500 is a wasteful number, since it uses less digits than its factorization.

71449500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 71449500 is about 8452.7806075871. The cubic root of 71449500 is about 414.9537859217.

The spelling of 71449500 in words is "seventy-one million, four hundred forty-nine thousand, five hundred".